An introitus is any type of entrance or opening. However, the term often refers to the opening of the vagina, which leads to the vaginal canal. The vaginal opening sits in the rear portion of the vulva the external female genitalia. The vulva is covered by fleshy layers of skin called labia that help cushion and protect the vagina.
Mononucleosis mono is a viral infection that causes a sore throat and fever. Cases often happen in teens and young adults. It goes away on its own after a few weeks of rest. Most of us are exposed to EBV at some point while we're growing up. Infants and young kids infected with EBV usually have very mild symptoms or none at all. But infected teens and young adults often develop the symptoms that define mono. Signs of mono usually show up about 1—2 months after someone is infected with the virus.
Tampons are used for menstrual flows to absorb the blood during the days of a period. Much like sanitary pads, they are a blend of rayon and cotton that collect any blood and fluid flowing out of the vagina. Once inserted, a cord extends out of the body for easy removal.
Sometimes the skin around the vagina can be red, swollen or cracked. See 'How to treat vaginal thrush' below for more information. Mild thrush can usually be treated with a short course of antifungal medication.